linux-kernel - Re: [PATCH v2] hwmon: pmbus: pxe1610: don't bail out when not all pages are active

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Message-ID: <20210416141425.GA254358@roeck-us.net>
Date:   Fri, 16 Apr 2021 07:14:25 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Paul Fertser <fercerpav@...il.com>
Cc:     linux-hwmon@...r.kernel.org, Jean Delvare <jdelvare@...e.com>,
        Vadim Pasternak <vadimp@...lanox.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] hwmon: pmbus: pxe1610: don't bail out when not all
 pages are active

On Fri, Apr 16, 2021 at 01:29:04PM +0300, Paul Fertser wrote:
> Certain VRs might be configured to use only the first output channel and
> so the mode for the second will be 0. Handle this gracefully.
> 
> Fixes: b9fa0a3acfd8 ("hwmon: (pmbus/core) Add support for vid mode detection per page bases")
> Signed-off-by: Paul Fertser <fercerpav@...il.com>

Applied.

Thanks,
Guenter

> ---
> 
> Notes:
>     Changes for v2:
>       - Use more imperative style
> 
>  drivers/hwmon/pmbus/pxe1610.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/drivers/hwmon/pmbus/pxe1610.c b/drivers/hwmon/pmbus/pxe1610.c
> index da27ce34ee3f..eb4a06003b7f 100644
> --- a/drivers/hwmon/pmbus/pxe1610.c
> +++ b/drivers/hwmon/pmbus/pxe1610.c
> @@ -41,6 +41,15 @@ static int pxe1610_identify(struct i2c_client *client,
>  				info->vrm_version[i] = vr13;
>  				break;
>  			default:
> +				/*
> +				 * If prior pages are available limit operation
> +				 * to them
> +				 */
> +				if (i != 0) {
> +					info->pages = i;
> +					return 0;
> +				}
> +
>  				return -ENODEV;
>  			}
>  		}
> -- 
> 2.20.1
>